《毕业论文：美国赛车连杆专用工装夹具设计》.docx

美国赛车连杆专用工装夹具设计作者姓名：吴贺专业班级：机械工程及自动化 2005060401班指导老师：孙未摘要连杆属典型零件，目前国内外都有比较成熟的加工工艺。美国赛车连杆的杆身横截面工字型方向与普通连杆不同，且它的每一个面都要求加工，这使得它比普通连杆更难加工。本文针对美国赛车连杆本身的结构特点、工作情况和现有的加工条件，根据已制定的工艺规程为钻连杆小头孔空间斜工艺孔设计专用钻床工装夹具、为铣连杆大头孔的两侧面设计专用铣床工装夹具。本文首先对连杆零件结构特点、主要表面加工技术要求、材料工艺性、加工工艺性进行了分析，然后提出加工工艺路线。主体内容为夹具的设计，分别提出两套钻床夹具和铣床夹具方案，进行分析、比较，选出最佳方案。再对所选方案进行精度分析，论证可行性。关键词： 连杆 工艺规程 专用夹具A appropriative fixture designing for United States race car connecting rodAbstract： The connecting rod is a typical part. There are many mature technical schedules at home and abroad currently. The body of the United States races car connecting rod has a different exposure of the I -shaped to the common connecting rods. In addition to, its each face require to machining, which make it more difficult to be processed than those common connecting rods. This text based on the structure characteristics, the work circumstance and the existing process condition, and according to the established technical schedules, design appropriative fixture for drill press and milling machine.At first this test analyze the structure characteristics , main surface processing technology to be require , material processibility and machining processibility of the connecting rod. Then propose the technical schedule. The main content is fixture designing. Bring forward two set projects of appropriative fixture for drill press and milling machine separately. Then analyze, compare and choose the best project. At last do the accuracy analyzing and demonstrate feasibility of the project. Key word: connecting rod technical schedule fixture目录第1章 前言11.1本课题的提出和研究意义11.2主要研究内容11.3研究步骤1第2章 连杆零件分析22.1作用及工作状况分析22.2零件的结构分析22.3零件材料的工艺性22.4零件主要表面的技术要求32.5零件加工工艺分析42.5.1连杆加工的主要问题及工艺过程设计所采取的措施42.5.2定位基准的选择：5第3章 零件工艺路线的制定63.1毛坯种类及其工艺过程的确定63.2工艺路线方案选择6第4章 专用夹具设计84.1专用机床夹具84.1.1专用机床夹具的组成84.2机床夹具设计要求94.3专用机床夹具设计的步骤104.4工件的六点定位规则114.5夹紧装置的组成和要求12第5章 专用钻床夹具设计155.1．夹具设计任务165.2. 确定工件的定位方案175.3. 确定刀具的引导方式18 5.3.1 钻床夹具的刀具导向元件－钻套185.4．确定工件夹紧方案195.5.确定夹具体的形式和夹具总体结构205.6．夹